Get an infeasible solution after timeout

Answered

Florian Speicher

June 05, 2024 10:54 Edited

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Hallo, I have a MILP which it ist really hard to find a feasible solution for. I have a Timelimit of 600 Seconds and Sometimes this is Not enough to find a feasible solution. I guess during that time gurobi tried several infeasible solutions. Is it possible to get the solution which has the least residual?

Cheers Florian

Related to

• FeasRelax

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  Riley Clement

  • Gurobi Staff

  June 05, 2024 23:48

  Hi Florian,

  The solver does not store infeasible solutions, but you can use our feasrelax functionality to achieve what you want.

  I'd also try the following:

  - setting a 0 objective, to get a "feasibility problem" and see if that is successful
  - try our NoRel heuristic, by setting NoRelHeurTime or NoRelHeurWork to a non-zero value.  In the first phase of NoRel it will be trying to find a feasible solution.  In the second phase it looks to improve it.

  - Riley

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